<ul>
              <li>{@code ${project.build.outputDirectory}} (typically {@code target/classes}) if {@code scope} is "main",</li>
              <li>{@code ${project.build.testOutputDirectory}} (typically {@code target/test-classes}) if {@code scope} is "test",</li>
              <li>{@code ${project.build.directory}} (typically {@code target}) otherwise.</li>
            </ul>

			Value:       float64(runtime.NumGoroutine()),
		})
		return metrics
	})
	return mg
}

// getHistogramMetrics fetches histogram metrics and returns it in a []Metric
// Note: Typically used in MetricGroup.RegisterRead
//
// The toLowerAPILabels parameter is added for compatibility,
// if set, it lowercases the `api` label values.